Ontario Mineral Inventory

Ontario Geological Survey
Permanent Link to this Record: MDI52N02SE00066

Record: MDI52N02SE00066


Mineral Record Identification
Record Name(s) M. Colberg Prospect - 1953, Polkholm Property - 1957
Related Record Type Simple
Related Record(s)
Record Status Prospect
Date Created 1985-Jul-23
Date Last Modified 2022-Jun-29
Created By
Revised By


Primary Commodities: Copper, Nickel, Zinc

Secondary Commodities: Gold, Platinum


Township or Area: Earngey

Latitude: 51° 4' 44.08"    Longitude: -92° 32' 56.62"

UTM Zone: 15    Easting: 531588.44   Northing: 5658696.78    UTM Datum: NAD83

Resident Geologist District: Red Lake

NTS Grid: 52N02SE

Point Location Description: Precise

Location Method: Data Compilation

Exploration History

1955: M. Colberg - trenching. 1956-57: Campbell Island Mines and Explorations Ltd. - mapping, DD-22-1445 m, pitting


Province: Superior

Subprovince: Uchi

Terrane: North Caribou

Domain: Uchi

Belt: Red Lake

Geological Age: Archean  

Metamorphism Type: Regional

Metamorphism Grade: Amphibolite


Lithology Data
Rock Type Rank Composition Texture Relationship
Pyroxenite 1 Pyroxenite Serpentinized Host
Intermediate Tuff 2 Tuff Adjacent
Terrigenous-Clastic-Unsubdivided 3 Clastic Adjacent


Mineralization and Alteration
Rank Mineral Name Class Economic Mineral Type Alteration Mineral Type Alteration Ranking Alteration Intensity Alteration Style

Mineralization Comments

Nov 13, 2014 (A Wilson) - Chip samples collected in 1959 ranged from 1.08% Cu and 0.40% Zn over 5.5 m to 2.66% Cu and 0.39% Ni over 6.9 m. The best assay from the 1959 drilling returned 2.30% Cu and 0.20% Ni over 1.4 ft. Chip samples collected from trenches and pits at site in 1986 returned assays of 340 ppb Au, 2720 ppm Ni, 4780 ppm Cu and 100 ppb Pt.

Mineral Record Details


File - Resident Geologist files AF RL 1957 Earngey #6

Publication Number: Date: 1996


Publisher Name:

Location: Red Lake RGP

File - Resident Geologist files AF RL 1987 Earngey #39

Publication Number: Date: 1996


Publisher Name:

Location: Red Lake RGP

Map - Earngey and Birkett townships, Kenora District

Publication Number: M2428 Scale: 1:31,680    Date: 1980

Author: Thurston P.C.

Publisher Name: Ontario Geological Survey


Mono - Copper, nickel, lead and zinc deposits of Ontario

Publication Number: MDC012 Page: 148-149  Date: 1969

Author: Shklanka R.

Publisher Name: Ontario Dept. of Mines


MonoMap - Geology of the Earngey-Costello area, District of Kenora, Patricia Portion

Publication Number: R234 Page: 103-106  Date: 1985

Author: Thurston P.C.

Publisher Name: Ontario Geological Survey


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Ministry Contact Information

For detailed information regarding this mineral record please contact the Red Lake Resident Geologist District Office